import gpu_unai from PCSX4ALL project

1 files changed, 255 insertions, 0 deletions

diff --git a/plugins/gpu_unai/gpu_raster_line.h b/plugins/gpu_unai/gpu_raster_line.h
new file mode 100644
index 0000000..6d66c7d
--- /dev/null
+++ b/plugins/gpu_unai/gpu_raster_line.h
@@ -0,0 +1,255 @@
+/***************************************************************************
+*   Copyright (C) 2010 PCSX4ALL Team                                      *
+*   Copyright (C) 2010 Unai                                               *
+*                                                                         *
+*   This program is free software; you can redistribute it and/or modify  *
+*   it under the terms of the GNU General Public License as published by  *
+*   the Free Software Foundation; either version 2 of the License, or     *
+*   (at your option) any later version.                                   *
+*                                                                         *
+*   This program is distributed in the hope that it will be useful,       *
+*   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+*   GNU General Public License for more details.                          *
+*                                                                         *
+*   You should have received a copy of the GNU General Public License     *
+*   along with this program; if not, write to the                         *
+*   Free Software Foundation, Inc.,                                       *
+*   51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA.           *
+***************************************************************************/
+
+///////////////////////////////////////////////////////////////////////////////
+//  GPU internal line drawing functions
+
+#define GPU_DIGITS  16
+#define GPU_DIGITSC (GPU_DIGITS+3)
+
+INLINE long GPU_DIV(long rs, long rt)
+{
+	return rt ? (rs / rt) : (0);
+}
+
+///////////////////////////////////////////////////////////////////////////////
+void gpuDrawLF(const PD gpuPixelDriver)
+{
+	s32 temp;
+	s32 xmin, xmax;
+	s32 ymin, ymax;
+	s32 x0, x1, dx;
+	s32 y0, y1, dy;
+
+	x0 = PacketBuffer.S2[2] + DrawingOffset[0]; 	GPU_TESTRANGE(x0);
+	y0 = PacketBuffer.S2[3] + DrawingOffset[1]; 	GPU_TESTRANGE(y0);
+	x1 = PacketBuffer.S2[4] + DrawingOffset[0]; 	GPU_TESTRANGE(x1);
+	y1 = PacketBuffer.S2[5] + DrawingOffset[1]; 	GPU_TESTRANGE(y1);
+
+	xmin = DrawingArea[0];	xmax = DrawingArea[2];
+	ymin = DrawingArea[1];	ymax = DrawingArea[3];
+	const u16 pixeldata = GPU_RGB16(PacketBuffer.U4[0]);
+
+	dy = (y1 - y0);
+	if (dy < 0) dy = -dy;
+	dx = (x1 - x0);
+	if (dx < 0) dx = -dx;
+	if (dx > dy) {
+		if (x0 > x1) {
+			GPU_SWAP(x0, x1, temp);
+			GPU_SWAP(y0, y1, temp);
+		}
+		y1 = GPU_DIV((y1 - y0) << GPU_DIGITS, dx);
+		y0 <<= GPU_DIGITS;
+		temp = xmin - x0;
+		if (temp > 0) {
+			x0 = xmin;
+			y0 += (y1 * temp);
+		}
+		if (x1 > xmax) x1 = xmax;
+		x1 -= x0;
+		if (x1 < 0) x1 = 0;
+
+		const int li=linesInterlace;
+		for (; x1; x1--) {
+			temp = y0 >> GPU_DIGITS;
+			if( 0 == (temp&li) )  {
+				if ((u32) (temp - ymin) < (u32) (ymax - ymin)) {
+					gpuPixelDriver(&((u16*)GPU_FrameBuffer)[FRAME_OFFSET(x0, temp)],pixeldata);
+				}
+			}
+			x0++;
+			y0 += y1;
+		}
+	} else if (dy) {
+		if (y0 > y1) {
+			GPU_SWAP(x0, x1, temp);
+			GPU_SWAP(y0, y1, temp);
+		}
+		x1 = GPU_DIV((x1 - x0) << GPU_DIGITS, dy);
+		x0 <<= GPU_DIGITS;
+		temp = ymin - y0;
+		if (temp > 0) {
+			y0 = ymin;
+			x0 += (x1 * temp);
+		}
+		if (y1 > ymax) y1 = ymax;
+		y1 -= y0;
+		if (y1 < 0) y1 = 0;
+		
+		const int li=linesInterlace;
+		for (; y1; y1--) {
+			if( 0 == (y0&li) )  {
+				temp = x0 >> GPU_DIGITS;
+				if ((u32) (temp - xmin) < (u32) (xmax - xmin)) {
+					gpuPixelDriver(&((u16*)GPU_FrameBuffer)[FRAME_OFFSET(temp, y0)],pixeldata);
+				}
+			}
+			y0++;
+			x0 += x1;
+		}
+		
+	} else {
+		if( 0 == (y0&linesInterlace) )  {
+			if ((u32) (x0 - xmin) < (u32) (xmax - xmin)) {
+				if ((u32) (y0 - ymin) < (u32) (ymax - ymin)) {
+					gpuPixelDriver(&((u16*)GPU_FrameBuffer)[FRAME_OFFSET(x0, y0)],pixeldata);
+				}
+			}
+		}
+	}
+}
+
+/*----------------------------------------------------------------------
+GF
+----------------------------------------------------------------------*/
+
+///////////////////////////////////////////////////////////////////////////////
+void gpuDrawLG(const PD gpuPixelDriver)
+{
+	s32 temp;
+	s32 xmin, xmax;
+	s32 ymin, ymax;
+	s32 x0, x1, dx;
+	s32 y0, y1, dy;
+	s32 r0, r1;
+	s32 g0, g1;
+	s32 b0, b1;
+
+	x0 = PacketBuffer.S2[2] + DrawingOffset[0];	GPU_TESTRANGE(x0);
+	y0 = PacketBuffer.S2[3] + DrawingOffset[1];	GPU_TESTRANGE(y0);
+	x1 = PacketBuffer.S2[6] + DrawingOffset[0];	GPU_TESTRANGE(x1);
+	y1 = PacketBuffer.S2[7] + DrawingOffset[1];	GPU_TESTRANGE(y1);
+
+	r0 = PacketBuffer.U1[0];  g0 = PacketBuffer.U1[1];  b0 = PacketBuffer.U1[2];
+	r1 = PacketBuffer.U1[8];  g1 = PacketBuffer.U1[9];	b1 = PacketBuffer.U1[10];
+
+	xmin = DrawingArea[0];	xmax = DrawingArea[2];
+	ymin = DrawingArea[1];	ymax = DrawingArea[3];
+
+	dy = (y1 - y0);
+	if (dy < 0)
+	dy = -dy;
+	dx = (x1 - x0);
+	if (dx < 0)
+	dx = -dx;
+	if (dx > dy) {
+		if (x0 > x1) {
+			GPU_SWAP(x0, x1, temp);
+			GPU_SWAP(y0, y1, temp);
+			GPU_SWAP(r0, r1, temp);
+			GPU_SWAP(g0, g1, temp);
+			GPU_SWAP(b0, b1, temp);
+		}
+		y1 = GPU_DIV((y1 - y0) << GPU_DIGITS, dx);
+		r1 = GPU_DIV((r1 - r0) << GPU_DIGITS, dx);
+		g1 = GPU_DIV((g1 - g0) << GPU_DIGITS, dx);
+		b1 = GPU_DIV((b1 - b0) << GPU_DIGITS, dx);
+		y0 <<= GPU_DIGITS;
+		r0 <<= GPU_DIGITS;
+		g0 <<= GPU_DIGITS;
+		b0 <<= GPU_DIGITS;
+		temp = xmin - x0;
+		if (temp > 0) {
+			x0 = xmin;
+			y0 += (y1 * temp);
+			r0 += (r1 * temp);
+			g0 += (g1 * temp);
+			b0 += (b1 * temp);
+		}
+		if (x1 > xmax) x1 = xmax;
+		x1 -= x0;
+		if (x1 < 0) x1 = 0;
+		
+		const int li=linesInterlace;
+		for (; x1; x1--) {
+			temp = y0 >> GPU_DIGITS;
+			if( 0 == (temp&li) )  {
+				if ((u32) (temp - ymin) < (u32) (ymax - ymin)) {
+					gpuPixelDriver (
+						&((u16*)GPU_FrameBuffer)[FRAME_OFFSET(x0, temp)],
+						(((b0>>GPU_DIGITSC)&0x1F)<<10) | (((g0>>GPU_DIGITSC)&0x1F)<< 5) | ((r0>>GPU_DIGITSC)&0x1F)
+					);
+				}
+			}
+			x0++;
+			y0 += y1;
+			r0 += r1;
+			g0 += g1;
+			b0 += b1;
+		}
+	} else if (dy) {
+		if (y0 > y1) {
+			GPU_SWAP(x0, x1, temp);
+			GPU_SWAP(y0, y1, temp);
+			GPU_SWAP(r0, r1, temp);
+			GPU_SWAP(g0, g1, temp);
+			GPU_SWAP(b0, b1, temp);
+		}
+		x1 = GPU_DIV((x1 - x0) << GPU_DIGITS, dy);
+		r1 = GPU_DIV((r1 - r0) << GPU_DIGITS, dy);
+		g1 = GPU_DIV((g1 - g0) << GPU_DIGITS, dy);
+		b1 = GPU_DIV((b1 - b0) << GPU_DIGITS, dy);
+		x0 <<= GPU_DIGITS;
+		r0 <<= GPU_DIGITS;
+		g0 <<= GPU_DIGITS;
+		b0 <<= GPU_DIGITS;
+		temp = ymin - y0;
+		if (temp > 0) {
+			y0 = ymin;
+			x0 += (x1 * temp);
+			r0 += (r1 * temp);
+			g0 += (g1 * temp);
+			b0 += (b1 * temp);
+		}
+		if (y1 > ymax) y1 = ymax;
+		y1 -= y0;
+		if (y1 < 0) y1 = 0;
+		
+		const int li=linesInterlace;
+		for (; y1; y1--) {
+			if( 0 == (y0&li) )  {
+				temp = x0 >> GPU_DIGITS;
+				if ((u32) (temp - xmin) < (u32) (xmax - xmin)) {
+					gpuPixelDriver (
+						&((u16*)GPU_FrameBuffer)[FRAME_OFFSET(temp, y0)],
+						(((b0>>GPU_DIGITSC)&0x1F)<<10) | (((g0>>GPU_DIGITSC)&0x1F)<< 5) | ((r0>>GPU_DIGITSC)&0x1F)
+					);
+				}
+			}
+			y0++;
+			x0 += x1;
+			r0 += r1;
+			g0 += g1;
+			b0 += b1;
+		}
+	} else {
+		if( 0 == (y0&linesInterlace) )  {
+			if ((u32) (x0 - xmin) < (u32) (xmax - xmin)) {
+				if ((u32) (y0 - ymin) < (u32) (ymax - ymin)) {
+					gpuPixelDriver (
+						&((u16*)GPU_FrameBuffer)[FRAME_OFFSET(x0, y0)],
+						(((b0>>GPU_DIGITSC)&0x1F)<<10) | (((g0>>GPU_DIGITSC)&0x1F)<< 5) | ((r0>>GPU_DIGITSC)&0x1F)
+					);
+				}
+			}
+		}
+	}
+}